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Question
Biology
Secondary treatment of sewage
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Q. Secondary treatment of sewage
Microbes in Human Welfare
A
removes grit and large pieces of organic matter
0%
B
involves shredding, churning, filtration and sedimentation
0%
C
does not require aeration
0%
D
involves microbial digestion of organic matter
100%
Solution:
Correct answer is (d) involves microbial digestion of organic matter